Stop-motion



G. H. DU BRAU.

STOP MOTION.

APPLICATION FILED APR.10| I9I9.

1,326,71 5. Patented Dec. 30,1919.

3 SHEETS-SHEET I.

INVENTOR G.H.DuBR u. By W A TTORIVEIS e, H. nu BBAU.

STOP MOTION.

I APPLICATION FILED APR. I0. 1919. 1,326,715. Patented Dec. 30,1919.

3 SHEETSSHEET 2.

E M. 44 I I i= J 1 I WITNESSES v INVENTOR G.H. DUBRHU By W /0 W ATTORNEYS G. H. DU BRAU.

STOP MOHON.

APPLICATION FILED APR. 10. I919.

Patented Dec. 30,1919.

3 SHEETS-SHEET 3- /6 2 ls INVENTOR G. H. Du Brmu A TTORNEYS on'rrn GUSTAVE H. DU BEAU, O1 HOLYOKE, MASSACHUSETTS.

STOP-MOTION.

Specification of Letters Patent.

Patented Dec. 30, 1919.

Application filed April 10, 1919. Serial No. 289,040.

To all whom it may concern:

it known that I, GUSTAVE H. DU BRAU, a citizen of the United States, and a resident of Holyoke, in the county of Hampden and State of Massachusetts, have invented a new and Improved Stop-Motion, of which the following is a full, clear and exact description.

The invention relates to warping machines and other textile machines, and its object is to provide a new and improved stop motion for textile machines arranged to actuate the driving clutch on the main shaft of the machine whenever any one of the yarns break. Another object is to provide a stop motion which is simple and durable in construction and exceedingly sensitive to unfailingly stop motion on the breaking of a yarn. Another object is to permit of attaching the stop motion to warping machines and the like without requiring essential changes in the construction of such machines. Another object is to permit the at tendant to stop or start the warping or other machine from either side.

\Vith these and other objects in view the invention consists of certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference in dicate corresponding parts in all the views.

Figure 1 is a side elevation of the improved stop motion as applied to a warping machine Fig. 2 is a plan view of the same;

Fig. 3 is an enlarged cross section of the same on the line 33 of Fig. 1; I

Fig. 4 is a sectional side elevation of the same on the line 44 of Fig. 8;

Fig. 5 is an enlarged sectional side elevation of the stop motion as applied;

Fig. 6 is a front elevation of the same with parts shown in section;

Fig. 7 is a sectional side elevation of the same with the parts in position after the breaking of a yarn;

Fig. 8 is a sectional plan view ofpart of the stop motion, the section being on the line 8- 8 of Fig. 6;

Fig. 9 is a side elevation of the clutch snifting mechanism with the main shaft shown in section; and

Fig. 10 is a sectional side elevation of part of the same. I

The stop motion is shown applied to a warping machine of usual construction and mounted on a suitable framelO and the warping machine is provided with a carrier 11 supporting the lease reed 12, the lease reeds 13 and the small feed 14 adjacent the warp beam 15 on which the yarns 16 are wound, it being understood that the yarns after leaving the usual creel (not shown) pass through the reed 12 around the lease reeds 13 and through the reed 14 to the warp beam 15.

The yarn 16 intermediate the creel and the reed 12 pass through eyes 20 of drop members 21 normally suspended by the yarns above the top crossbar 22 of a frame 23 mounted to travel bodily in a forward or backward direction and adapted to be swung into an angular position whenever one of the drop members 21 moves into the path of the crossbar 22 on the breaking of the corresponding yarn 16. The lower por tion of each drop member 21 is in the form of a fork 24 straddling a crossbar 25 mounted on a suitable support 26 held on a frame 27 attached to the reed 12 at the lowerend thereof. The rock frame 23 is mounted to swing on a transversely extending pivot or shaft 30 terminating in trunnions 31 engaging guideways 32 formed in the sides 33 of the frame 27, as plainly shown in Figs. 5 and 6. By the arrangement described the frame 23 can move bodily in a forward and backward direction and can turn on the shaft 30 to move into angular position,.as illustrated in Fig. 7 y

In order to impart a continuous forward and backward reciprocating motion to the frame 23 and to normally hold the same in an approximately vertical position, the following arrangement is made: The pivot or shaft 30 is rigidly connected withone end of an approximately S-shaped spring 40 extending from the rear end of a link 41 terminating in a fork 42 straddling a crossbar 43' of a lever 44 havinga plurality of lever arms 45 fulcrumed at their lower ends'on suitable brackets 46 attached to afloor or othersuitable support. It is understoodthat the lever 44 comprises the leverarms 45 and the crossbar 43 rigidly connecting the upper ends of the leverarms 45 with each other. One lever arm 45 is provided with a pin 47 in contact with the face of a cam 48 secured on a shaft 49 journaled in a suitable bearing 50 attached to or forming part of the main frame 10. On the shaft 49 is secured a grooved pulley 51 connected by a crossed belt 52 with a similar pulley 53 secured on the main shaft 54 of the warping machine, as plainly illustrated in Figs. 3 and 4. On the main shaft 54 is mounted to rotate loosely a step pulley 55 connected by belt with other machinery for imparting a rotary motion to the pulley 55, and the pulley 55 is provided with a clutch member 56 adapted to be engaged by a clutch member 57 mounted to slide and to turn with the main shaft 54. \Vhen the clutch member 57 is in engagement with the clutch member 56 then the rotary motion of the step pulley 55 is transmitted to the shaft 54 to actuate the warping machine, and when the clutch member 57 is moved out of engagement with the clutch member 56 then the warping machine is stopped. When the warping machine is running then the main shaft 54 transmits a rotary motion to the shaft 49 and the cam 48 by the pulleys 53, 51 and the belt 52 and the rotary motion given to the cam 48 causes the lever 44 to swing forward and backward whereby the crossbar 43 of the lever imparts movement to the link 41 thus reciprocating the shaft 30 and consequently the frame 23. The spring 40 normally holds the frame 23 in upright posltion and the reciprocating motion given to the frame carries the top crossbar 22.

thereofpast the lower ends of the drop members 21 held suspended from the yarns 16. A spring 60 is connected with one of the lever arms 45 to hold the pin 47 at all times in engagement with the face of the cam 48 thus insuring a rockingmovement of the lever 44 when the machine is running. In case one of the yarns 16 breaks then the cor responding drop member 21 drops downward into the path of the crossbar 22 of the frame 23 whereby the frame is swung into an angular position either to the right or to the left (see Fig. 7 owing to the movement given to the shaft 30 of the frame 23 by the link 41 actuated by the crossbar 43 of the rocking lever 44.

. When the frame 23 swings into this angular position it actuates a shifting mechanism connected with the clutch member 57 to move the latter out of engagement with the clutch member 56 with a view to stop the machine. For this purpose the following arrangement is made: The shaft or pivot 30 of the frame 23 is provided with depending arms in which is journaled a transversely extending rod 71 to which is fastened a tubular gripping member 72 through which extends a link or rod 73 provided with a roughened portion 74 adapted to be gripped by the ends of the gripping member 72 when the latter moves into a tilted position.

Normally the rod or link 73 extends loosely through the gripping member 7 2, as plainly shown in Figs. 5 and 6, and in order to tilt the gripping member 72 when tilting the lever 23 the following arrangement is made: The rod 71 is provided with depending arms 75 and 76 engaging opposite sides of a loop 77 attached to and depending from the shaft 30 of the frame 23. When the frame swings into an angular position as previously explained then the loop 7 6 engages either of the arms 7 5 or 76 thus imparting a rocking motion to the rod 71 whereby the gripping member 72 is tilted and moves into gripping engagement with the roughened portion 74 of the link rod 73. hen this takes place and a traveling movement is given to the frame 23 the gripping member 72 in engagement with the link or rod 73 moves the latter either forward or backward according to the direction in which the frame 23 is moved at the time.

The forward end of the link or rod 73 is provided with an eye 80 through which extends a wire or a similar flexible member 81 attached at one end at 82 (see Fig. 3) to the frame 10 of the warping machine. The other end of the flexible member 81 is con nected with an arm 83 attached to one end of a rack shaft 84 journaled in a bracket 85 secured to the main frame 10. On the other end of the shaft 84 (see Fig. 9) is secured or formed an arm 86 terminating in a lug 87 engaging a rod 88 projecting horizontally from an arm 89 hung loosely at its upper end on a pivot 90 attached to a bracket 91 secured to the main frame 10. The depending arm 89 is pressed on by a spring 92 to normally hold the lower angular or cam end 93 of the arm 89 out of the path of a lug 94 formed on the shifting lever 95 engaging the clutch member 57. The shifting lever 95 is fulcrumed at 96 on the main frame 10. The cam end 93 of the arm 89 is adapted to be engaged by a locking member 100 fulcrumed at 101 on the clutch member 56 (see Fig. 10) and pressed on by a spring 102. This locking member 100 rotates with the clutch member 56 and when the link or rod 73 receives a forward or a backward movement, as above described, it pulls or pushes on the flexible member 81 whereby a swinging movement is given to the arm 86 which thus acts on the arm 88 thereby swinging the cam end 93 of the arm 89 into the path of the lug 94 and also into the path of the locking member 100. When this takes place the locking member 100 acts on the cam end 93 and thereby imparts a swinging movement to the arm 89 whereby the shifting lever" 95 is actuated and the clutch member 57 is moved out of engagement with the clutch member 56 thus stopping the rotation of the main shaft 54.

It is understood that the eye 80 of the link or rod 73 has a sliding connection with the wire 81, and the fork 42 of the rod 41 connected with the shaft 30 of the frame has a sliding connection with the top crossbar 43 of the lever 44, and hence the carrier 11 supporting the link or rod 73 as well as the bar 41 can readily move in a transverse direction in the usual manner without disconnecting the eye 80 from the wire 81 or the fork 42 from the top bar 43 of the lever 44, thus insuring at all times a proper functioning of the stop motion irrespective of the position of the carrier 11 at the time the yarn 16 breaks. When the machine is running the yarns 16 are delivered to the warp beam 15 in the usual manner and the drop members 27 are held in raised position. Now in case one of the yarns breaks then the corresponding drop member 21 drops down into the path of the reciprocating vertically disposed frame 23 and consequently the frame 23 is moved into an angular or a tilted position either to the right or to the left according to the direction in which the frame 23 is traveling at the time. Thus when the frame is traveling from the front toward the rear then the crossbar 22 moves into engagement with the fork 24 of the drop member 21 and the frame finally assumes the position shown in Fig. 7, and the loop 77 of the tilted frame acts on the arm 76 thus tilting the gripping member 72. The gripping member 7 2 in being tilted grips the roughened portion 74 of the link or rod 73 and moves the latter in the direc tion in which the frame 23 is moved at the time, that is, as shown in Fig. 7, from the right to the left, thereby exerting a pull on the wire 81 and bending the same. The pull exerted on the wire 81 causes the latter to impart a swinging motion to the shifting lever 95 whereby the clutch member 57 is moved out of engagement with the clutch member 56 and hence the machine comes to a stop. It is understood that when the frame 23 swings from its normal vertical position into tilted position the spring 40 is placed under tension and after the desired repair has been made on the broken yarn and the drop member 21 has been raised to normal position then the spring 40 returns the frame 23 to normal vertical position. The above described operation is then repeated, that is, the stop motion remains dormant and the machine keeps on running until the yarn breaks.

In order to permit the operator to manipulate the usual shifting lever 95 of the clutch member 57 to be actuated from the opposite side of the machine on which the clutch mechanism is located use is made of the following arrangement: The shifting lever 95 is connected by a link 110 with an upright lever 111 fulcrumed at its lower end at 112 on a bracket attached to the floor, and the upper end of this lever 111 is connected with a top bar 113 extending across the machine to within convenient reach of the operator standing on the side opposite the one on which the clutch mechanism is located. It is understood that by the operator manipulating the bar 113 the clutch member 57 can be moved intoor out of engagement relative to the clutch member 56.

In order to properly support the bar'113 use is made of a. love): 114 parallel to the lever 1.11 and fulcrumed at 115 on a bracket attached to the floor.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1.,A stop motion for textile machines, comprising drop members each hung on a yarn, a normally vertically disposed frame mounted to reciprocate bodily sidewise below the said drop members and adapted to swing into an angular position on any one of the drop members dropping into the pathof the said frame on the breaking of a corresponding yarn, and a controlling mechanism adapted to be actuated by the said frame on the latter moving into an angular position, the said controlling device being connected with the stopping mechanism of the machine.

2. A stop motion for textile machines, comprising members, each suspended on a yarn, a reciprocating frame arranged below the said suspended members and adapted to engage any one of the said members dropping into the path of the frame on the breaking of the corresponding yarn, the said frame being mounted to rock, a gripping member moving with the said frame and adapted to be moved into gripping position by the frame on the latter swinging into an angular position, a rod adapted to be gripped by the said gripping members, and a shifting mechanism for the driving member of the warping machine and connected with the said rod to move the said driving member into stopping position to stop the textile machine on the breaking of a yarn.

3. A stop motion for textile machines, comprising a reciprocating frame normally disposed vertically and adapted to swing into an angular position, drop members suspended on the yarns and normally above the said frame, any one of the said drop members being adapted to drop into the path of the said frame on the breaking of the corresponding yarn to impart a swinging motion to the said frame, a gripping devicemoving bodily with the said frame and adapted to be moved into a gripping position on the frame moving into angular position, a rod adapted to be gripped by the said gripping device, a flexible member fixed at one end and engaged intermediate its ends by the said rod, and a driving clutch shifting mechanism connected with the other end of the said flexible member to move the driving clutch of the textile machine into inactive position on the breaking of a yarn.

i. A stop motion for textile machines, comprising drop members suspended on the yarns, horizontal gnideways, a frame having a pivot mounted to travel in the said guideways and extending below the said suspended drop members, any one of the latter being adapted to drop into the path of the said frame, a link having a spring at one end, the spring being connected with the said pivot, a lever engaged by the other end of the said link, actuating means imparting a continuous rocking motion to the said lever to move the said frame bodily forward and backward, a gripping crevice moving bodily with the said frame and adapted to move into gripping position on the frame swinging into an angular position, a rod adapted to be engaged by the said gripping device, a wire fixed at one end and engaged by the rod, a shifting device connected with the other end of the said wire, a main clutch controlled by the said shifting device, and a main shaft controlled by the said clutch and connected with the said lever actuating means.

5. A stop motion for textile machines, comprising drop members suspended on the yarns, a frame having a pivot and adapted to be engaged by any one of the said drop members on the breaking of the corresponding yarn, gnideways engaged by the ends of the said frame pivot, means imparting a reciprocating motion to the said frame, a tubular gripping member mounted to swing on the said frame and provided with depending rods, a bar on the said frame and straddled by the said rods of the gripping member, a link extending through the said grippingmember and having a roughened portion adapted to be engaged by the gripping member, and a stopping mechanism connected with the link and adapted to stop the machine on the breaking of a yarn and the dropping of the corresponding drop member into the path of the said frame.

6. A stop motion for textile machines, comprising drop members suspended on the yarns, a frame having a pivot and adapted to be engaged by any one of the said ,drop members on the breaking of the corresponding yarn, guideways, engaged by the ends of the said frame pivot, means imparting a reciprocating motion to the said frame, a tubular gripping member mounted to swing on the said frame and provided with depending rods, a bar on the said frame and straddled by the said rods of the gripping member, a link extending through the said gripping member and having a roughened portion adapted to be engaged by the gripping member, the said link terminating in an eye, a wire fixed at one end and extending through the said link eye,-a shifting lever connected with the other end of the said wire, and a clutch controlled by the said shifting lever and controlling the main shaft of the textile machine.

GUSTAVE H. DU BRAU. 

